Here's what rhymes with scintillatingly.
gratingly irritatingly titillatingly deprecatingly penetratingly intimidatingly nauseatingly invigoratingly hesitatingly devastatingly humiliatingly illuminatingly infuriatingly aggravatingly unhesitatingly fascinatingly ingratiatingly excruciatingly exasperatingly calculatingly accommodatingly Words that almost rhyme with scintillatingly
ragingly engagingly rakishly piratically basically amazingly creatively evasively scathingly unfailingly meditatively legislatively pervasively entertainingly imitatively abrasively jadedly persuasively animatedly prosaically unavailingly qualitatively authoritatively algebraically appreciatively collaboratively exaggeratedly uncomplainingly complicatedly lackadaisically manipulatively administratively exasperatedly